MDCAT Physics Chapter 6 Electrostatics Online Test With Answers

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MDCAT Physics Chapter 6 Electrostatics Online Test

Sr. # Questions Answers Choice
1 A charge of 2C experiences a force 2000N in a uniform electric field. In this fieldthe potential difference between two points separated by a distance 1cm is 2V 10V 5V 20V
2 Capacitance of a capacitor does not depend upon Separation between plates Thickness of the plates Area of the plates Medium between the plates
3 Two point charges repel each other with a force of 4× 𝟏𝟎−𝟓 newton at a distanceof meter. Two charges are Both positive Alike Both Negative Unlike
4 The potential difference between head and tail of an "electric eel" can be upto. 6V 60V 6000V 600V
5 The relative permittivity of air is 1 3.7 7.8 1.0006
6 The relative permittivity of air is 1 3.7 7.8 1.0006
7 Area under Q-V graph for a capacitor represents Charged stored Energy stored Electric field strength Potential difference
8 When a dielectric is inserted between the plates of a capacitor, Which one is true Energy stored increase Energy stored decrease Capacitance decrease All
9 Two charges of equal magnitudes and at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is: F/8 F/4 F/16 4F
10 Charge on a capacitor is 50C. if voltage applied across its plates is 10V then its capacitance: 5F 0.02F 500F 0.2F
11 An electron is moving towards high potential. Its electrical P.E: Increases Remains constant Decrease May increase may decrease
12 A body gets positive charge. It means that: It has lost electrons It has gained positions It has gained protons It has gained 𝛼 −particles
13 A parallel plate air capacitor is charged and then isolated. When a dielectric material is inserted between the plates of the capacitor , then which of the following does not change: Electric field between the plates Charge on the plates Potential difference across the plate Energy stored in the capacitor
14 A charged conductor has charged on its: Outer surface Surrounding surface Inner surface Middle point
15 A soap bubble is give a negative charge, then its radius: Decrease Remains same Increases Bubble will disappear
16 Two point charges +2 coulombs and +6 coulombs repel each other with a force of 12 N if a charge -4 coulomb is given to each of these charges the force will be: 4N repulsive 8N repulsive 4N attractive 8N attractive
17 If the magnitude of charge on each of two objects is doubled and the distance between them is also doubled then force between them: Doubled Quadrupled Halved Remains same
18 Which one of the following statements regarding electrostatics is wrong? Charge is conserved Charge is quantized There is no field near an isolated charge at rest A moving charge produces both electric and magnetic fields
19 An electric field can deflect: X-rays Neutrons 𝛼 −particles 𝛾 −rays
20 If the distance between the plates of a parallel plates capacitor is increased, its potential will: Remain the same Increase Decrease Decrease exponentially
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